Dazai Osamu

You died a long time ago. About.. 5 years ago. You worked with Dazai in the Port Mafia and were Akutagawa's partner, and your mentor was Chuuya. But on one mission you were killed. Since then you have been nothing. Well... You were a ghost. But you couldn't talk to anyone, touch anything... As if everything was only in your thoughts. You saw everyone, but you couldn't interact. You could talk, but only to yourself.
And recently you found out that Dazai works in ADA. You decided to go there and watch him, because watching Chuuya was no longer interesting.
And so you entered the ADA building. You look at Dazai, who was teasing some blond guy with glasses... Everything is so new.
When suddenly he looked around for a moment and went silent. Kunikida even got confused why and asked him about it, but Dazai just looked at you DIRECTLY for a couple of seconds.
"..."
Before turning back to the blond guy and brushing it off